The influence on loading rate on pile behaviour in fine grained soils

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Statnamic Testing was jointly developed in the early nineties by Berminghammer Foundation Equipment of Canada and TNO Building and Construction Research of the Netherlands as an alternative method of pile load testing. The system is a kinematic or rapid load test, increasingly being used as an alternative to dynamic testing in the USA, East Asia and more recently in the UK (Anon, 1997).
To derive static pile load deflection data it is necessary to analyse the Statnamic data to account for pile/soil inertia and damping effects. The most commonly adopted method is referred to as the Unloading Point Method. This method of analysis provides excellent correlation with static tests for sands and gravels (Brown, 1994), but may over-predict pile capacities by up to 30% for fine grained soils (clays).
Current understanding of the Statnamic test is based upon field studies that are influenced by natural soil behaviour. Thus model pile testing in a clay calibration chamber is being undertaken at the University of Sheffield (Anderson et al, 1991). Results from these tests will be used to determine the effect of the rate of testing on pile bearing capacity, and will govern the design and testing procedure for a full scale field study.
Original languageEnglish
Title of host publicationXIVth European Young Geotechnical Engineer’s Conference
Place of PublicationBulgaria
Pages233
Number of pages240
Publication statusPublished - Sep 2001

Keywords

  • Statnamic load testing

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  • Research Output

    • 5 Conference contribution
    • 3 Article

    Analysis of a rapid load test on an instrumented bored pile in clay

    Brown, M. J., Hyde, A. F. L. & Anderson, W. F., 2006, In : Géotechnique. 56, 9, p. 627-638 12 p.

    Research output: Contribution to journalArticle

    Open Access
    File
  • 28 Citations (Scopus)
    1495 Downloads (Pure)

    Some observations on statnamic pile testing

    Brown, M. J. & Hyde, A. F. L., 2006, In : Geotechnical Engineering. 159, 4, p. 269-273 5 p.

    Research output: Contribution to journalArticle

    Open Access
    File
  • 2 Citations (Scopus)
    390 Downloads (Pure)

    Statnamic pile testing case studies

    Brown, M., Jun 2006, Proceedings-DFI/EFFC of the 10th International Conference on Piling and Deep Foundations. United States: Deep Foundations Institute, p. 627-634 8 p. 1407

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • Cite this

    Brown, M. (2001). The influence on loading rate on pile behaviour in fine grained soils. In XIVth European Young Geotechnical Engineer’s Conference (pp. 233).